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How to store arbitrary data for some HTML tags
... In order to retrieve the data, 1337, via jquery, be sure to remove 'data' from the variable name. For eg, use: $(this).data('internalid'); Instead of: $(this).data('data-internalid');
– Gideon Rosenthal
Sep 11 '14 at 22:07
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Center Align on a Absolutely Positioned Div
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The absolute positioning will position from the top left of an item. Using translate will shift it to the amount relative to its size.
– Michael Giovanni Pumo
Nov 15 '16 at 13:19
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Can I try/catch a warning?
I need to catch some warnings being thrown from some php native functions and then handle them.
11 Answers
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What is memoization and how can I use it in Python?
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I've found this extremely useful
def memoize(function):
from functools import wraps
memo = {}
@wraps(function)
def wrapper(*args):
if args in memo:
return memo[args]
else:
rv = function(*args)
memo[args] = rv
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Math functions in AngularJS bindings
...d be able to point your controller at another view and use the same values from the scopes. (if that makes sense).
You'll also want to consider that any function calls inside of a binding (such as {{}} or ng-bind or ng-bind-html) will have to be evaluated on every digest, because angular has no way...
IE9 border-radius and background gradient bleeding
...st for IE ..
you can get the svg code by using their gradient color code, from Microsoft this site (specially made for gradient to svg):
http://ie.microsoft.com/testdrive/graphics/svggradientbackgroundmaker/default.html
enjoy :)
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Integer division: How do you produce a double?
...ve to guess, just check the JLS. int to double is a widening conversion. From §5.1.2:
Widening primitive conversions do not
lose information about the overall
magnitude of a numeric value.
[...]
Conversion of an int or a long value
to float, or of a long value to
double, may...
How to retry after exception?
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Do a while True inside your for loop, put your try code inside, and break from that while loop only when your code succeeds.
for i in range(0,100):
while True:
try:
# do stuff
except SomeSpecificException:
continue
break
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Validating URL in Java
...t to verify your String is a valid URL, you can use the UrlValidator class from the Apache Commons Validator project.
For example:
String[] schemes = {"http","https"}; // DEFAULT schemes = "http", "https", "ftp"
UrlValidator urlValidator = new UrlValidator(schemes);
if (urlValidator.isValid("ftp:/...
How to add elements to an empty array in PHP?
...sh notation depending on how many items must be added the extra characters from re-typing the array name each time may be more of a performance hindrance than the function call over-head. As always, judgment should be exercised when choosing. Good answers!
– Mattygabe
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